NatWest has commissioned an independent audit to determine what went wrong when thousands of customers were left unable to access cash earlier this month.
In an email to customers, the RBS-owned bank said:
We have commissioned an independent audit to investigate how the problem arose and we will make all the improvements necessary to ensure it doesn't happen again.
We will make the findings public when they become available.
The bank said "We appreciate the patience that has been displayed".... let me inform them, that patience has run out.
The chief executive of NatWest's owner RBS, has said that "a corner has been turned" as it deals with the fallout of an IT meltdown.
NatWest customers faced further chaos today almost a week after the bank's computer glitch. But what should you do if you're affected?